Synonyms for «serious effects»

significant severe heavy deadly huge dangerous potential extreme real grave negative health devastating medical major important fatal strong deep considerable adverse big massive possible grievous great profound long side term harmful economic terrible physical several financial nasty safety mental likely detrimental downside weight evil public large legal tragic substantial

impact consequences damage repercussions issues implications ramifications problems complications risk symptoms threat harm conditions outcomes events results injury concerns seriousness changes danger reactions loss signs cases toxicity amount benefits death illness diseases severity matter accident life error factor treatment interest costs subject testing warning money situation nature face hazard